European Transactions on Electrical Power最新文献_第4页

Methods to improve transient performance of CVTs: analysis and recommendations 提高cvt暂态性能的方法:分析与建议

European Transactions on Electrical Power Pub Date : 2011-07-01 DOI: 10.1002/ETEP.512

A. Khanna

引用次数: 1

Influence of Steinmetz circuit capacitor degradation on series resonance of networks Steinmetz电路电容退化对网络串联谐振的影响

European Transactions on Electrical Power Pub Date : 2011-07-01 DOI: 10.1002/ETEP.514

L. Sainz, Manuel Caro, E. Caro

引用次数: 2

Use of Prony analysis to extract sync information of low frequency oscillation from measured data 利用proony分析从实测数据中提取低频振荡的同步信息

European Transactions on Electrical Power Pub Date : 2011-07-01 DOI: 10.1002/ETEP.531

K. Shim, H. Nam, Y. Lim

引用次数: 22

Application of BDI-based intelligent multi-agent systems for distribution system service restoration planning 基于bdi的智能多智能体系统在配电系统服务恢复规划中的应用

European Transactions on Electrical Power Pub Date : 2011-07-01 DOI: 10.1002/ETEP.542

M. Tsai, Yen-Tsung Pan

{"title":"Application of BDI-based intelligent multi-agent systems for distribution system service restoration planning","authors":"M. Tsai, Yen-Tsung Pan","doi":"10.1002/ETEP.542","DOIUrl":"https://doi.org/10.1002/ETEP.542","url":null,"abstract":"By changing the status of switches on distribution feeders, service to de-energized customers can be restored after an occurrence of a fault. In this paper, multi-agent system (MAS) is applied for the power distribution system service restoration task using local information by utilizing the characteristics of information sharing. Each software agent is running autonomously and is able to exchange information within limited distance. Every agent is capable of performing service restoration such that service restoration can be performed in parallel when a multiple fault scenario occurs. As a result, the outage period can be reduced. BDI (believe–desire–intention) agent architecture is implemented in this paper for group and zone service restoration for power distribution systems. Zone/switch relation table is built and used by agents in order to identify adequate switching actions during the service restoration planning stage. The proposed MAS is implemented on JADE (Java Agent Development) platform. The simulation results show that the proposed BDI-based service restoration agent system is capable of providing adequate restoration switching plan in several scenarios. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.542","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51118935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 30

Efficient immune-GA method for DNOs in sizing and placement of distributed generation units 基于免疫遗传算法的分布式发电机组优化设计

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.501

Alireza Soroudi, M. Ehsan

引用次数: 33

Emission allowance allocation with multiple equity principles in deregulated power systems 放松管制电力系统中多重公平原则的排放配额分配

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.509

J. Xie, J. Zhong, D. Gan

{"title":"Emission allowance allocation with multiple equity principles in deregulated power systems","authors":"J. Xie, J. Zhong, D. Gan","doi":"10.1002/ETEP.509","DOIUrl":"https://doi.org/10.1002/ETEP.509","url":null,"abstract":"Equity is an essential issue to consider in emission allowance allocation problems to ensure the participation of as many market participants as possible. Various equity principles have been practiced in emission allowance allocations, and some of them conflict. The main purpose of this work is to present an emission allowance allocation methodology that takes into account both individual interests and different versions of equity and makes progress toward reaching a global consensus for emission allowance allocation in deregulated power systems. We propose nine equity principles for emission allowance allocation. We combine a hierarchical system with a voting mechanism to incorporate various definitions of equity and to find a compromise solution. The voting mechanism is used for selecting equity principles for each power plant (market participant). The hierarchical system is composed of two subsystems. The upper level subsystem computes the emission allowances among all regions, while the lower level subsystem obtains the emission allowances among the power plants in each region. A test power system serves to illustrate the essential features of the proposed methodology, and the results are used to investigate the choice of equity principles of different types of power plants located in different regions. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.509","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51117486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Dynamic economic dispatch solution using an improved genetic algorithm with non‐stationary penalty functions 基于非平稳惩罚函数的改进遗传算法求解动态经济调度

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.520

S. Ganjefar, Morteza Tofighi

{"title":"Dynamic economic dispatch solution using an improved genetic algorithm with non‐stationary penalty functions","authors":"S. Ganjefar, Morteza Tofighi","doi":"10.1002/ETEP.520","DOIUrl":"https://doi.org/10.1002/ETEP.520","url":null,"abstract":"This paper presents an improved genetic algorithm with non-stationary penalty functions (IGA-NSPF) to solve the dynamic economic dispatch (DED) problem of generating units while considering valve-point effects. The cost function of the generating units exhibits the non-convex characteristics, as the valve-point effects are modeled and imposed as rectified sinusoid components in the cost function. An improved evolution direction operator and gene swap operator are introduced in the proposed approach to improve the convergence characteristic of the genetic algorithm (GA). The non-stationary penalty functions (NSPF) are introduced to put more selective pressure on the GA to find a feasible solution, resulting in difficulty during solution searching. The non-stationary penalty is a function of the number of iterations that, in the proposed method, are based on a sigmoid function as the number of iteration increases so does the penalty. To illustrate the effectiveness of the proposed method, a dispatch case consisting of 10 units and 24 time intervals has been considered. Numerical results indicate that the performance of the IGA-NSPF presents the best results when compared with previous optimization methods in solving DED problems with the valve-point effect. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.520","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51117386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28

A runs test‐based method for discrimination between internal faults and inrush currents in power transformers 一种基于运行试验的电力变压器内部故障和涌流鉴别方法

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.506

B. Fani, M. Golshan, H. Abyaneh, M. Saghaian-nejad

{"title":"A runs test‐based method for discrimination between internal faults and inrush currents in power transformers","authors":"B. Fani, M. Golshan, H. Abyaneh, M. Saghaian-nejad","doi":"10.1002/ETEP.506","DOIUrl":"https://doi.org/10.1002/ETEP.506","url":null,"abstract":"A new method based on runs test is proposed to distinguish the inrush currents from the internal faults in power transformers, which is derived from the inherent differences between these waveforms. First, two statistical hypotheses that represent these differences are defined. Then by testing these hypotheses using runs test and by comparing the outputs of the hypotheses, a criterion to identify the internal fault is obtained. A total of 200 experimental cases are used to test the performance of the technique. In all of the tests, the proposed method accurately distinguished between fault and inrush currents without any errors. Also the suitable performance of the method is demonstrated by simulation of different faults and switching conditions on a power transformer. For this purpose, a small part of Iran power system involving a power transformer and the transmission lines on both sides of the transformer has been considered. To include effective factors on differential current components, the elements of this power system have been precisely modeled in PSCAD/EMTDC. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.506","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51116997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A multivariate forecasting method for short-term load using chaotic features and RBF neural network 基于混沌特征和RBF神经网络的短期负荷多元预测方法

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.502

Yuming Liu, Shaolan Lei, Caixin Sun, Quan Zhou, Haijun Ren

{"title":"A multivariate forecasting method for short-term load using chaotic features and RBF neural network","authors":"Yuming Liu, Shaolan Lei, Caixin Sun, Quan Zhou, Haijun Ren","doi":"10.1002/ETEP.502","DOIUrl":"https://doi.org/10.1002/ETEP.502","url":null,"abstract":"This paper presents a multivariate forecasting method for electric short-term load using chaos theory and radial basis function (RBF) neural networks. To apply the method, the largest Lyapunov exponent and correlation dimension are firstly calculated which show the electric load series is essentially a chaotic time series. Then, a multivariate chaotic prediction method is proposed taking historical load and temperature into account. Phase space reconstruction of a univariate time series is extended to construct a multivariate time series. Delay time and embedding dimension of the historical load series and temperature series are determined by mutual information and minimal forecasting error, respectively. Finally, a three-layer RBF neural network is employed to forecast the load of one day ahead and one week ahead. Real load data of Chongqing Power Grid are tested. Daily and weekly forecasting results show that the proposed multivariate approach improves the accuracy of forecasting significantly comparing with the univariate methods. Discussion of forecasting error and future work are also presented. As an efficient and effective alternative for STLF, the chaos theory based multivariate forecasting is feasible for potential application. Copyright © 2010 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.502","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51116681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Probabilistic power system stabilizer design with consideration of optimal siting using recursive Genetic Algorithm 考虑最优选址的递归遗传算法概率电力系统稳定器设计

European Transactions on Electrical Power Pub Date : 2011-04-01 DOI: 10.1002/ETEP.508

Z. Wang, C. Chung, K. Wong, D. Gan, Y. Xue

引用次数: 13